<u>Answer:</u> The final temperature of water is 32.3°C
<u>Explanation:</u>
When two solutions are mixed, the amount of heat released by solution 1 (liquid water) will be equal to the amount of heat absorbed by solution 2 (liquid water)
The equation used to calculate heat released or absorbed follows:
......(1)
where,
q = heat absorbed or released
= mass of solution 1 (liquid water) = 50.0 g
= mass of solution 2 (liquid water) = 29.0 g
= final temperature = ?
= initial temperature of solution 1 = 25°C = [273 + 25] = 298 K
= initial temperature of solution 2 = 45°C = [273 + 45] = 318 K
c = specific heat of water= 4.18 J/g.K
Putting values in equation 1, we get:
Converting this into degree Celsius, we use the conversion factor:
Hence, the final temperature of water is 32.3°C
Answer:
The molar heat of combustion for butanol is 2.7 *10³ kJ/mol
Explanation:
Step 1: Data given
Temperature change = 4.18 °C
mass of butanol = 3.00 grams
When butanol is burned Temperature change = 20.81 °C
Step 2: Calculate Ccalorimeter
Ccal = 21750J / 4.18 °C = 5203.35 J/ °C
Step 3: Calculate heat generated
Heat generated = 20.81 °C * 5203.35 J/°C = 108281.71 J = 108.28 kJ
Step 4: Calculate moles of butanol
Number of moles = mass / molar mass
Number of moles = 3 grams / 74.123 g/mol = 0.04 moles
Step 5: Calculate Molar heat of combustion
Molar heat of combustion = 108.28 kJ / 0.04 moles = 2707 kJ /mol
The molar heat of combustion for butanol is 2.7 *10³ kJ/mol
Scientists don’t know everything. If they did, there would be no need for any more science. Also because the questions are too difficult and we don't have the technology to prove the answers. so they're uncertain.
Answer:
B) atmosphere cuz when water is evaporated it goes to the atmosphere
Explanation: Saponification reaction is a reaction in which hydrolysis of fats takes place under basic conditions giving glycerol and a salt of corresponding fatty acid.
We are given a Fatty acid called as Trimyristin.
Its reaction with KOH leads to the formation of soap and is given by the equation:
The condensed structural formula for the equation is given in the image attached.